Tesco has told customers: “Avocado fans will notice some dramatic changes when they pick up one of Britain’s most popular salad items at Tesco.” The supermarket will be removing the barcode on Tesco’s extra large avocados and swapping it for a bold laser etching. The swap aims to “help the environment” and cut back on plastic use. It has not been made a permanent fixture though: the laser etchings will just be a trial. If rolled out across all stores, the move, made jointly with the UK’s main avocado supplier, Westfalia Fruit, based in Spalding, Lincolnshire, could save nearly a million plasti…